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Most landlords approve removable safety modifications when asked in writing with a specific list of what will be installed, the no-damage guarantee, and the agreement to restore the unit at move-out. The matched contractor can provide a template request letter to send to the landlord.
Common removable solutions: tension-mounted grab bars (these are different from suction-cup bars — they wedge between floor and ceiling and are load-rated up to 250 pounds), freestanding curbless shower thresholds, modular aluminum ramps that bolt to existing concrete without anchoring into the building, motion-activated plug-in pathway lighting, and lever-handle adapters that slip over existing knobs without modification.
For permanent work in a rental, the Fair Housing Act gives tenants the right to make reasonable accessibility modifications at their own expense in most cases. The landlord can require the unit be restored at move-out. AgeProofPros can connect you with a CAPS-certified contractor who has done rental work before and is familiar with the legal requirements.